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將c=-8代入-a+b+c=-22、4a+2b+c=8得-a+b=-22-c=-14 4a+2b=8-c=16-a+b=-14 4a+2b=16可以推出b=a-14代入4a+2b=16得4a+2(a-14)=6a-28=16得6a=44 a=22/3 b=-20/3
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